Advice for new weavers:
take a "100000 hours" approach to your selvedges - pay attention and correct problems, but don't expect them to be perfect, it's something you'll get better at with experience.
That experience might mean nothing if you're working with a different yarn/sett/fiber/structure than usual
it's likely you're working with too much warp tension. Think canopy not tightrope.
If you think you need high tension to get even tension over your warp, the problem might be in how you wind the warp or how you dress your loom
It takes practice to build the muscle memory and rhythm that makes it look easy, give yourself time
Take care of your joints - stretching, massage, and proper rest are important. Weaving is a whole-body activity.
Sample. It's the weaving version of a swatch. A piece of cardboard with slits corresponding to the sett and a tapestry needle threaded with your weft is all you need and can save you some headache.
Have fun with it! Try new things. Watch videos or take workshops. Nothing is off limits because you're new.
